metal-organic compounds
catena-Poly[[bis(3-methylbenzoato-κ2O,O′)lead(II)]-μ-4,4′-bipyridine-κ2N:N′]
aCollege of Science, Guangdong Ocean University, Zhanjiang 524088, People's Republic of China
*Correspondence e-mail: huangfu407@126.com
In the title complex, [Pb(C8H7O2)2(C10H8N2)]n, the PbII atom is located on a twofold rotation axis and is six-coordinated by four carboxylate O atoms from two 3-methylbenzoate ligands and two N atoms from two 4,4′-bipyridine (4,4′-bpy) ligands, displaying a hemi-directed coordination. The 4,4′-bpy ligand has an inversion center at the mid-point of the central C—C bond. The PbII atoms are linked by bidentate bridging 4,4′-bpy into a chain along [101]. These chains are further connected into layers via C—H⋯O hydrogen bonds.
Related literature
For general background to 3-methylbenzoate complexes, see: Wang et al. (2002); Zhao et al. (2009) and to 4,4′-bipyridine complexes, see: Biradha et al. (2006). For hemi- and holo-directed geometries of lead(II) complexes, see: Shimoni-Livny et al. (1998).
Experimental
Crystal data
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Refinement
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Data collection: APEX2 (Bruker, 2007); cell SAINT (Bruker, 2007); data reduction: SAINT; program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008) and DIAMOND (Brandenburg, 1999); software used to prepare material for publication: SHELXTL.
Supporting information
https://doi.org/10.1107/S1600536811035021/hy2458sup1.cif
contains datablocks I, global. DOI:Structure factors: contains datablock I. DOI: https://doi.org/10.1107/S1600536811035021/hy2458Isup2.hkl
A mixture of lead acetate (1 mmol, 0.325 g), 3-methylbenzoic acid (1 mmol, 0.136 g), 4,4'-bpy (1 mmol, 0.156 g), NaOH (1.5 mmol, 0.06 g) and H2O (12 ml) was placed in a 23 ml Teflon-lined reactor, which was heated to 433 K for 3 days and then cooled to room temperature at a rate of 10 K h-1. Colorless crystals obtained were washed with water and dried in air.
H atoms were placed at calculated positions and were treated as riding on the parent C atoms, with C—H = 0.93 (CH) and 0.96 (CH3) Å and with Uiso(H) = 1.2(1.5 for methyl)Ueq(C).
In the structural investigation of 3-methylbenzoate complexes, it has been found that 3-methylbenzoic acid functions as a multidentate ligand (Wang et al., 2002; Zhao et al., 2009), with versatile binding and coordination modes. As is well known, 4,4'-bipyridine (4,4'-bpy) ligand may act in bidentate bridging or monodentate terminal mode (Biradha et al., 2006). In this paper, we report the
of the title compound, a new Pb(II) complex obtained by the reaction of 3-methylbenzoic acid, 4,4'-bpy and lead acetate in an alkaline aqueous solution.As depicted in Fig. 1, the PbII atom is located on a twofold rotation axis and is coordinated by four O atoms from two 3-methylbenzoate ligands and two N atoms from two µ-4,4'-bpy ligand (Table 1). The coordination environment of the PbII atom is hemidirected (Shimoni-Livny et al., 1998). The 3-methylbenzoate ligand adopting bidentate coordination mode chelate the PbII atom, which can be regarded as a knot. The 4,4'-bpy ligand bridges two neighboring knots, forming a one-dimensional chain along [1 0 1] (Fig. 2). The distance between two knots is 12.882 (3) Å. These chains are further assembled via C—H···O hydrogen bonds (Table 2) into a layered network (Fig. 3).
For general background to 3-methylbenzoate complexes, see: Wang et al. (2002); Zhao et al. (2009) and to 4,4'-bipyridine complexes, see: Biradha et al. (2006). For hemi- and holo-directed geometries of lead(II) complexes, see: Shimoni-Livny et al. (1998).
Data collection: APEX2 (Bruker, 2007); cell
SAINT (Bruker, 2007); data reduction: SAINT (Bruker, 2007); program(s) used to solve structure: SHELXS97 (Sheldrick, 2008); program(s) used to refine structure: SHELXL97 (Sheldrick, 2008); molecular graphics: SHELXTL (Sheldrick, 2008) and DIAMOND (Brandenburg, 1999); software used to prepare material for publication: SHELXTL (Sheldrick, 2008).[Pb(C8H7O2)2(C10H8N2)] | F(000) = 1224 |
Mr = 633.65 | Dx = 1.887 Mg m−3 |
Monoclinic, C2/c | Mo Kα radiation, λ = 0.71073 Å |
Hall symbol: -C 2yc | Cell parameters from 5300 reflections |
a = 20.506 (8) Å | θ = 1.3–28.0° |
b = 5.534 (2) Å | µ = 7.60 mm−1 |
c = 20.219 (8) Å | T = 296 K |
β = 103.507 (7)° | Block, colorless |
V = 2231.0 (15) Å3 | 0.30 × 0.27 × 0.21 mm |
Z = 4 |
Bruker APEXII CCD diffractometer | 2402 independent reflections |
Radiation source: fine-focus sealed tube | 2153 reflections with I > 2σ(I) |
Graphite monochromator | Rint = 0.025 |
φ and ω scans | θmax = 27.0°, θmin = 3.9° |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | h = −26→25 |
Tmin = 0.129, Tmax = 0.215 | k = −7→2 |
8381 measured reflections | l = −25→25 |
Refinement on F2 | Primary atom site location: structure-invariant direct methods |
Least-squares matrix: full | Secondary atom site location: difference Fourier map |
R[F2 > 2σ(F2)] = 0.017 | Hydrogen site location: inferred from neighbouring sites |
wR(F2) = 0.042 | H-atom parameters constrained |
S = 1.01 | w = 1/[σ2(Fo2) + (0.020P)2 + 1.2P] where P = (Fo2 + 2Fc2)/3 |
2402 reflections | (Δ/σ)max < 0.001 |
151 parameters | Δρmax = 0.38 e Å−3 |
0 restraints | Δρmin = −0.50 e Å−3 |
[Pb(C8H7O2)2(C10H8N2)] | V = 2231.0 (15) Å3 |
Mr = 633.65 | Z = 4 |
Monoclinic, C2/c | Mo Kα radiation |
a = 20.506 (8) Å | µ = 7.60 mm−1 |
b = 5.534 (2) Å | T = 296 K |
c = 20.219 (8) Å | 0.30 × 0.27 × 0.21 mm |
β = 103.507 (7)° |
Bruker APEXII CCD diffractometer | 2402 independent reflections |
Absorption correction: multi-scan (SADABS; Sheldrick, 1996) | 2153 reflections with I > 2σ(I) |
Tmin = 0.129, Tmax = 0.215 | Rint = 0.025 |
8381 measured reflections |
R[F2 > 2σ(F2)] = 0.017 | 0 restraints |
wR(F2) = 0.042 | H-atom parameters constrained |
S = 1.01 | Δρmax = 0.38 e Å−3 |
2402 reflections | Δρmin = −0.50 e Å−3 |
151 parameters |
x | y | z | Uiso*/Ueq | ||
Pb1 | 1.0000 | 0.51034 (2) | 0.7500 | 0.03248 (6) | |
O1 | 0.99708 (9) | 0.2668 (3) | 0.85225 (9) | 0.0427 (4) | |
O2 | 0.92275 (9) | 0.1874 (3) | 0.75719 (9) | 0.0442 (4) | |
N1 | 0.88014 (11) | 0.6287 (4) | 0.64774 (11) | 0.0418 (5) | |
C1 | 0.92142 (13) | −0.0604 (5) | 0.85353 (14) | 0.0353 (5) | |
C2 | 0.86958 (12) | −0.2024 (5) | 0.81811 (13) | 0.0363 (5) | |
H2 | 0.8510 | −0.1701 | 0.7725 | 0.044* | |
C3 | 0.84468 (13) | −0.3932 (5) | 0.84970 (14) | 0.0402 (6) | |
C4 | 0.87334 (17) | −0.4373 (6) | 0.91770 (17) | 0.0499 (7) | |
H4A | 0.8574 | −0.5645 | 0.9395 | 0.060* | |
C5 | 0.92466 (16) | −0.2977 (6) | 0.95346 (14) | 0.0562 (8) | |
H5 | 0.9432 | −0.3309 | 0.9991 | 0.067* | |
C6 | 0.94919 (15) | −0.1064 (6) | 0.92180 (14) | 0.0499 (7) | |
H6 | 0.9838 | −0.0103 | 0.9461 | 0.060* | |
C7 | 0.94876 (12) | 0.1458 (5) | 0.81944 (13) | 0.0350 (5) | |
C8 | 0.78855 (17) | −0.5504 (6) | 0.8108 (2) | 0.0580 (9) | |
H8A | 0.7464 | −0.4889 | 0.8162 | 0.087* | |
H8B | 0.7946 | −0.7127 | 0.8279 | 0.087* | |
H8C | 0.7890 | −0.5497 | 0.7634 | 0.087* | |
C9 | 0.82897 (17) | 0.4775 (5) | 0.62681 (17) | 0.0474 (7) | |
H9 | 0.8279 | 0.3363 | 0.6514 | 0.057* | |
C10 | 0.77682 (16) | 0.5196 (4) | 0.56991 (16) | 0.0443 (7) | |
H10 | 0.7418 | 0.4095 | 0.5582 | 0.053* | |
C11 | 0.77707 (11) | 0.7242 (4) | 0.53090 (11) | 0.0303 (5) | |
C12 | 0.83066 (13) | 0.8809 (5) | 0.55292 (14) | 0.0415 (6) | |
H12A | 0.8335 | 1.0222 | 0.5289 | 0.050* | |
C13 | 0.87981 (13) | 0.8270 (5) | 0.61065 (14) | 0.0479 (7) | |
H13 | 0.9148 | 0.9365 | 0.6243 | 0.058* |
U11 | U22 | U33 | U12 | U13 | U23 | |
Pb1 | 0.03302 (8) | 0.03156 (8) | 0.03056 (8) | 0.000 | 0.00275 (5) | 0.000 |
O1 | 0.0416 (10) | 0.0463 (10) | 0.0363 (10) | −0.0058 (8) | 0.0017 (8) | 0.0017 (8) |
O2 | 0.0468 (10) | 0.0512 (11) | 0.0305 (9) | −0.0093 (9) | 0.0010 (8) | 0.0076 (8) |
N1 | 0.0401 (12) | 0.0448 (13) | 0.0352 (12) | 0.0023 (10) | −0.0016 (10) | −0.0019 (10) |
C1 | 0.0374 (14) | 0.0366 (12) | 0.0334 (14) | 0.0039 (10) | 0.0112 (11) | 0.0012 (11) |
C2 | 0.0351 (13) | 0.0412 (13) | 0.0337 (13) | 0.0056 (10) | 0.0098 (10) | 0.0021 (11) |
C3 | 0.0400 (14) | 0.0357 (13) | 0.0472 (17) | 0.0027 (11) | 0.0150 (12) | 0.0000 (12) |
C4 | 0.0582 (19) | 0.0490 (15) | 0.0490 (18) | 0.0026 (14) | 0.0259 (15) | 0.0110 (14) |
C5 | 0.070 (2) | 0.066 (2) | 0.0322 (15) | 0.0006 (16) | 0.0110 (14) | 0.0126 (14) |
C6 | 0.0557 (18) | 0.0589 (18) | 0.0319 (15) | −0.0079 (15) | 0.0036 (13) | 0.0035 (14) |
C7 | 0.0341 (13) | 0.0398 (13) | 0.0322 (13) | 0.0032 (10) | 0.0102 (11) | 0.0027 (11) |
C8 | 0.0487 (18) | 0.0537 (17) | 0.071 (2) | −0.0113 (14) | 0.0126 (17) | 0.0047 (17) |
C9 | 0.0530 (18) | 0.0427 (16) | 0.0399 (16) | −0.0018 (12) | −0.0024 (13) | 0.0074 (12) |
C10 | 0.0450 (16) | 0.0407 (15) | 0.0400 (16) | −0.0107 (11) | −0.0044 (12) | 0.0043 (11) |
C11 | 0.0302 (12) | 0.0331 (12) | 0.0270 (12) | 0.0007 (9) | 0.0058 (9) | −0.0027 (10) |
C12 | 0.0372 (14) | 0.0412 (14) | 0.0408 (15) | −0.0071 (11) | −0.0014 (11) | 0.0059 (12) |
C13 | 0.0374 (15) | 0.0525 (16) | 0.0470 (16) | −0.0086 (12) | −0.0040 (12) | −0.0014 (14) |
Pb1—O1 | 2.4803 (19) | C5—C6 | 1.391 (4) |
Pb1—O2 | 2.4148 (19) | C5—H5 | 0.9300 |
Pb1—N1 | 2.893 (2) | C6—H6 | 0.9300 |
O1—C7 | 1.250 (3) | C8—H8A | 0.9600 |
O2—C7 | 1.268 (3) | C8—H8B | 0.9600 |
N1—C13 | 1.328 (4) | C8—H8C | 0.9600 |
N1—C9 | 1.331 (4) | C9—C10 | 1.395 (4) |
C1—C2 | 1.380 (4) | C9—H9 | 0.9300 |
C1—C6 | 1.388 (4) | C10—C11 | 1.381 (3) |
C1—C7 | 1.507 (4) | C10—H10 | 0.9300 |
C2—C3 | 1.391 (4) | C11—C12 | 1.389 (3) |
C2—H2 | 0.9300 | C11—C11i | 1.492 (4) |
C3—C4 | 1.385 (4) | C12—C13 | 1.385 (3) |
C3—C8 | 1.509 (4) | C12—H12A | 0.9300 |
C4—C5 | 1.368 (4) | C13—H13 | 0.9300 |
C4—H4A | 0.9300 | ||
O2—Pb1—O2ii | 84.54 (10) | C3—C4—H4A | 119.3 |
O2—Pb1—O1ii | 77.99 (7) | C4—C5—C6 | 120.2 (3) |
O2ii—Pb1—O1ii | 53.41 (5) | C4—C5—H5 | 119.9 |
O2—Pb1—O1 | 53.41 (6) | C6—C5—H5 | 119.9 |
O2ii—Pb1—O1 | 77.99 (6) | C1—C6—C5 | 119.3 (3) |
O1ii—Pb1—O1 | 114.17 (9) | C1—C6—H6 | 120.4 |
O2—Pb1—C7ii | 79.93 (7) | C5—C6—H6 | 120.4 |
O2ii—Pb1—C7ii | 26.88 (6) | O1—C7—O2 | 121.8 (2) |
O1ii—Pb1—C7ii | 26.53 (6) | O1—C7—C1 | 119.8 (2) |
O1—Pb1—C7ii | 96.40 (7) | O2—C7—C1 | 118.4 (2) |
O2—Pb1—N1 | 75.57 (7) | C3—C8—H8A | 109.5 |
O2ii—Pb1—N1 | 125.75 (6) | C3—C8—H8B | 109.5 |
O1ii—Pb1—N1 | 73.10 (6) | H8A—C8—H8B | 109.5 |
O1—Pb1—N1 | 122.47 (6) | C3—C8—H8C | 109.5 |
C7ii—Pb1—N1 | 99.23 (7) | H8A—C8—H8C | 109.5 |
C7—O1—Pb1 | 91.10 (15) | H8B—C8—H8C | 109.5 |
C7—O2—Pb1 | 93.70 (15) | N1—C9—C10 | 123.5 (3) |
C13—N1—C9 | 116.1 (2) | N1—C9—H9 | 118.2 |
C13—N1—Pb1 | 118.81 (17) | C10—C9—H9 | 118.2 |
C9—N1—Pb1 | 124.04 (18) | C11—C10—C9 | 120.2 (2) |
C2—C1—C6 | 119.9 (3) | C11—C10—H10 | 119.9 |
C2—C1—C7 | 121.2 (2) | C9—C10—H10 | 119.9 |
C6—C1—C7 | 118.9 (3) | C10—C11—C12 | 115.9 (2) |
C1—C2—C3 | 121.0 (2) | C10—C11—C11i | 122.3 (3) |
C1—C2—H2 | 119.5 | C12—C11—C11i | 121.8 (3) |
C3—C2—H2 | 119.5 | C13—C12—C11 | 120.1 (3) |
C4—C3—C2 | 118.2 (3) | C13—C12—H12A | 120.0 |
C4—C3—C8 | 120.7 (3) | C11—C12—H12A | 120.0 |
C2—C3—C8 | 121.0 (3) | N1—C13—C12 | 124.1 (3) |
C5—C4—C3 | 121.4 (3) | N1—C13—H13 | 118.0 |
C5—C4—H4A | 119.3 | C12—C13—H13 | 118.0 |
O2—Pb1—O1—C7 | 0.62 (14) | C2—C3—C4—C5 | 0.2 (4) |
O2ii—Pb1—O1—C7 | −91.49 (15) | C8—C3—C4—C5 | 179.4 (3) |
O1ii—Pb1—O1—C7 | −51.27 (13) | C3—C4—C5—C6 | 0.1 (5) |
C7ii—Pb1—O1—C7 | −71.79 (18) | C2—C1—C6—C5 | 0.7 (4) |
N1—Pb1—O1—C7 | 33.44 (17) | C7—C1—C6—C5 | −179.4 (3) |
O2ii—Pb1—O2—C7 | 78.48 (14) | C4—C5—C6—C1 | −0.6 (5) |
O1ii—Pb1—O2—C7 | 132.18 (16) | Pb1—O1—C7—O2 | −1.1 (2) |
O1—Pb1—O2—C7 | −0.61 (14) | Pb1—O1—C7—C1 | 177.1 (2) |
C7ii—Pb1—O2—C7 | 105.22 (16) | Pb1—O2—C7—O1 | 1.1 (3) |
N1—Pb1—O2—C7 | −152.43 (16) | Pb1—O2—C7—C1 | −177.1 (2) |
O2—Pb1—N1—C13 | −179.6 (2) | C2—C1—C7—O1 | −177.9 (2) |
O2ii—Pb1—N1—C13 | −107.4 (2) | C6—C1—C7—O1 | 2.2 (4) |
O1ii—Pb1—N1—C13 | −98.0 (2) | C2—C1—C7—O2 | 0.4 (4) |
O1—Pb1—N1—C13 | 153.72 (19) | C6—C1—C7—O2 | −179.5 (3) |
C7ii—Pb1—N1—C13 | −102.6 (2) | C13—N1—C9—C10 | −0.6 (5) |
O2—Pb1—N1—C9 | −11.7 (2) | Pb1—N1—C9—C10 | −168.7 (2) |
O2ii—Pb1—N1—C9 | 60.4 (3) | N1—C9—C10—C11 | 1.5 (5) |
O1ii—Pb1—N1—C9 | 69.9 (2) | C9—C10—C11—C12 | −1.3 (4) |
O1—Pb1—N1—C9 | −38.4 (3) | C9—C10—C11—C11i | 179.2 (3) |
C7ii—Pb1—N1—C9 | 65.3 (2) | C10—C11—C12—C13 | 0.3 (4) |
C6—C1—C2—C3 | −0.4 (4) | C11i—C11—C12—C13 | 179.8 (3) |
C7—C1—C2—C3 | 179.7 (2) | C9—N1—C13—C12 | −0.5 (4) |
C1—C2—C3—C4 | −0.1 (4) | Pb1—N1—C13—C12 | 168.3 (2) |
C1—C2—C3—C8 | −179.3 (3) | C11—C12—C13—N1 | 0.7 (5) |
Symmetry codes: (i) −x+3/2, −y+3/2, −z+1; (ii) −x+2, y, −z+3/2. |
D—H···A | D—H | H···A | D···A | D—H···A |
C13—H13···O1iii | 0.93 | 2.54 | 3.461 (4) | 172 |
Symmetry code: (iii) −x+2, y+1, −z+3/2. |
Experimental details
Crystal data | |
Chemical formula | [Pb(C8H7O2)2(C10H8N2)] |
Mr | 633.65 |
Crystal system, space group | Monoclinic, C2/c |
Temperature (K) | 296 |
a, b, c (Å) | 20.506 (8), 5.534 (2), 20.219 (8) |
β (°) | 103.507 (7) |
V (Å3) | 2231.0 (15) |
Z | 4 |
Radiation type | Mo Kα |
µ (mm−1) | 7.60 |
Crystal size (mm) | 0.30 × 0.27 × 0.21 |
Data collection | |
Diffractometer | Bruker APEXII CCD |
Absorption correction | Multi-scan (SADABS; Sheldrick, 1996) |
Tmin, Tmax | 0.129, 0.215 |
No. of measured, independent and observed [I > 2σ(I)] reflections | 8381, 2402, 2153 |
Rint | 0.025 |
(sin θ/λ)max (Å−1) | 0.639 |
Refinement | |
R[F2 > 2σ(F2)], wR(F2), S | 0.017, 0.042, 1.01 |
No. of reflections | 2402 |
No. of parameters | 151 |
H-atom treatment | H-atom parameters constrained |
Δρmax, Δρmin (e Å−3) | 0.38, −0.50 |
Computer programs: APEX2 (Bruker, 2007), SAINT (Bruker, 2007), SHELXS97 (Sheldrick, 2008), SHELXL97 (Sheldrick, 2008), SHELXTL (Sheldrick, 2008) and DIAMOND (Brandenburg, 1999), SHELXTL (Sheldrick, 2008).
D—H···A | D—H | H···A | D···A | D—H···A |
C13—H13···O1i | 0.93 | 2.54 | 3.461 (4) | 172 |
Symmetry code: (i) −x+2, y+1, −z+3/2. |
Acknowledgements
The authors acknowledge Guangdong Ocean University for supporting this work.
References
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In the structural investigation of 3-methylbenzoate complexes, it has been found that 3-methylbenzoic acid functions as a multidentate ligand (Wang et al., 2002; Zhao et al., 2009), with versatile binding and coordination modes. As is well known, 4,4'-bipyridine (4,4'-bpy) ligand may act in bidentate bridging or monodentate terminal mode (Biradha et al., 2006). In this paper, we report the crystal structure of the title compound, a new Pb(II) complex obtained by the reaction of 3-methylbenzoic acid, 4,4'-bpy and lead acetate in an alkaline aqueous solution.
As depicted in Fig. 1, the PbII atom is located on a twofold rotation axis and is coordinated by four O atoms from two 3-methylbenzoate ligands and two N atoms from two µ-4,4'-bpy ligand (Table 1). The coordination environment of the PbII atom is hemidirected (Shimoni-Livny et al., 1998). The 3-methylbenzoate ligand adopting bidentate coordination mode chelate the PbII atom, which can be regarded as a knot. The 4,4'-bpy ligand bridges two neighboring knots, forming a one-dimensional chain along [1 0 1] (Fig. 2). The distance between two knots is 12.882 (3) Å. These chains are further assembled via C—H···O hydrogen bonds (Table 2) into a layered network (Fig. 3).